<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <button-counter></button-counter>
        <button-counter></button-counter>
        <button-counter></button-counter>
    </div>
    <script type="text/javascript" src="js/vue.js"></script>
    <script type="text/javascript">
        /*
                      组件注册注意事项
                      1、组件参数的data值必须是函数
                      2、组件模板必须是单个跟元素
                      3、组件模板的内容可以是模板字符串

                    */

        Vue.component('button-counter', {
            data: function() {
                return {
                    count: 0
                }
            },
            //模板字符串
            template: `
        <div>
          <button @click="handle">点击了{{count}}次</button>
          <button>测试123</button>
        </div>
      `,
            methods: {
                handle: function() {
                    this.count += 2;
                }
            }
        })
        var vm = new Vue({
            el: '#app',
            data: {

            }
        });
    </script>
</body>

</html>